Definitions for corundum
kəˈrʌn dəmcorun·dum

Princeton's WordNetRate this definition:0.0 / 0 votes

1. corundom, corundumnoun

   very hard mineral used as an abrasive

GCIDERate this definition:0.0 / 0 votes

1. Corundumnoun

   The mineral alumina (Al2O3), as found native in a crystalline state. Transparent varieties are used as gemstones, including sapphire, which is the fine blue variety; the oriental ruby, or red sapphire; the oriental amethyst, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond.

WiktionaryRate this definition:0.0 / 0 votes

1. corundumnoun

   An extremely hard mineral, a form of aluminum oxide with the chemical formula AlO, that occurs in the form of the gemstones sapphire and ruby; it is used as an abrasive.

2. Etymology: From குருந்தம்.

WikipediaRate this definition:0.0 / 0 votes

1. Corundum

   Corundum is a crystalline form of aluminium oxide (Al2O3) typically containing traces of iron, titanium, vanadium and chromium. It is a rock-forming mineral. It is also a naturally transparent material, but can have different colors depending on the presence of transition metal impurities in its crystalline structure. Corundum has two primary gem varieties: ruby and sapphire. Rubies are red due to the presence of chromium, and sapphires exhibit a range of colors depending on what transition metal is present. A rare type of sapphire, padparadscha sapphire, is pink-orange. The name "corundum" is derived from the Tamil-Dravidian word kurundam (ruby-sapphire) (appearing in Sanskrit as kuruvinda).Because of corundum's hardness (pure corundum is defined to have 9.0 on the Mohs scale), it can scratch almost every other mineral. It is commonly used as an abrasive on everything from sandpaper to large tools used in machining metals, plastics, and wood. Some emery is a mix of corundum and other substances, and the mix is less abrasive, with an average Mohs hardness of 8.0 . In addition to its hardness, corundum has a density of 4.02 g/cm3 (251 lb/cu ft), which is unusually high for a transparent mineral composed of the low-atomic mass elements aluminium and oxygen.

ChatGPTRate this definition:0.0 / 0 votes

1. corundum

   Corundum is a tough, hard mineral that is composed of aluminum oxide, and sometimes contains iron, titanium, or chromium. It is the second hardest naturally occurring substance on Earth after diamond. Known for its various colored crystals such as ruby and sapphire, which are used as precious gems, it’s also used in making abrasive powders for several industries.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Corundumnoun

   the earth alumina, as found native in a crystalline state, including sapphire, which is the fine blue variety; the oriental ruby, or red sapphire; the oriental amethyst, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond

2. Etymology: [From Hind. kurand corundum stone.]

WikidataRate this definition:0.0 / 0 votes

1. Corundum

   Corundum is a crystalline form of aluminium oxide with traces of iron, titanium and chromium. It is a rock-forming mineral. It is one of the naturally clear transparent materials, but can have different colors when impurities are present. Transparent specimens are used as gems, called ruby if red and padparadscha if pink-orange. All other colors are called sapphire, e.g., "green sapphire" for a green specimen. The name "corundum" is derived from the Tamil word kuruntam meaning "ruby", and related to Sanskrit kuruvinda. Because of corundum's hardness, it can scratch almost every other mineral. It is commonly used as an abrasive, on everything from sandpaper to large machines used in machining metals, plastics, and wood. Some emery is a mix of corundum and other substances, and the mix is less abrasive, with an average hardness near 8.0. In addition to its hardness, corundum is unusual for its density of 4.02 g/cm³, which is very high for a transparent mineral composed of the low atomic mass elements aluminium and oxygen.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Corundum

   ko-run′dum, n. a mineral consisting of mere alumina, yet of great specific gravity—about four times that of water—and second in hardness only to the diamond. [Hind. kurund.]

Matched Categories

1. • Mineral

How to pronounce corundum?

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Numerology

1. Chaldean Numerology

   The numerical value of corundum in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of corundum in Pythagorean Numerology is: 1

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=corundum
2. ^ GCIDE
   https://gcide.gnu.org.ua/?q=corundum
3. ^ Wiktionary
   https://en.wiktionary.org/wiki/Corundum
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Corundum
5. ^ ChatGPT
   https://chat.openai.com
6. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/corundum
7. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=corundum
8. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=corundum